Note to Self about DD blocksizes
note to self about dd sizes ##################### Pick small block size then multiply by count to get size ex: dd if=/dev/zero bs=1M count=1024 That will get 1 Mib of a block sizeRead More…
ionice and nice notes – renice and re-ionice/reionice
######################### # ionice and nice notes # ######################### # nice -n19 is nicest on CPU priority # ionice -c2 -n7 is nicest on IO priority also so is ionice -c3. ionice -c3Read More…
LVM units in base 2 Tib,Gib,Mib or base 10 TB, GB, MB question and answer
Are the units in Base 2 (Mib,Gib,Tib) or in Base 10 (MB,GB,TB). They say “MB,GB,TB” but that is commonly misused. mdadm seems to be the only thing that truely has it right.Read More…
Using SED to extract information or data
Using SED to Extract Info out of Data ############################# We will use sed which is a common tool for search and replace to extract information. Sed is very powerful because its aRead More…